I've mentioned this before, but most great defenders are either a) buttholes; or b) Battier type brains. And mostly its a).
I've mentioned before my disdain for soft little glory hound offensive players in any sport. great defenders have a different attitude. They are the tough guys. They like the work. The good ones like to inflict a little pain. The great ones like to receive it too. And they want to dominate you and make you cry if they can. They cheat. They wag their finger in your face. They bang you around just because they can. They whisper sweet nothings about your mother. And they compete and they compete and they compete. Its just what they are, and you can't be a great defender unless you burn with that sort of fire.
Ben is not going to be a great defender. he's not even naturally disruptive. He's not naturally physical, which is a bit disappointing given that he once was a high school center (I'm thinking must have just been tallest kid/rail thin runner type). And he's entirely too nice for the job, without even a remote hint of the sort of BBall IQ that let a guy like Battier professor his way into defensive excellence. He might become solid, even a possibility of good I suppose, but he'll never have what Tony Allen or Gary Payton had. You can't teach it.
Iguodala has always seemed like a pretty nice guy. 
